Noise-muffler.



PATENTED DEC. 29, 1903.

S. BOUTON.

NOISE MUFFLER.

APPLICATION FILED APR. 3, 1903.

N0 MODEL.

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cmx uql go 9 7/10 fi u'rm I m ilwrrnn drains Patented December 29, 1903.

PATENT @rrrns.

SAMUEL BOUTON, OF SALEM, MASSACHUSETTS.

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SPECIFICATION forming'part of Letters Patent No. 748,157, dated December29, 1903.

Application filed April 8, 1903. Serial No. 150,961. (No model.)

I To all whom it may concern:

Be it. known that I, SAMUEL BOUTON, a citizen of the Republic of France,residing at Salennin the county of Essex and State of Massachusetts,have invented new and useful lxnprovementsin Noise-Mufliers, of whichthe following is a specification.

This invention relates to devices for muffling or deadening the sound ofescaping vapors, such asexhaust-stealn, gasolene vapors, and the like.

The invention consists in a tube provided with an inietorifice at oneend and an outletorifice at the other end thereof, the interior of saidtube being provided with a series of truncated cones located betweensaid orifices, with the apexes of said cones pointing toward saidinlet-orifice.

The invention again consists in a series of concentric tubes ofdifierent diameters held together by two heads to which said tubes arefastened, one of said heads provided with an inlet-orifice opening intoone end of the innermost tube of said series of tubes, the other of saidheads provided with outlet-orifices opening out of the annular spaceadjacent to the outermost tube of said series, the

inner tubes of said series being provided with orifices openingalternately from one into the other at opposite ends thereof.

The invention finally consists in the combination and arrangement ofparts set forth in the following specification, and particularly pointedout in the claims thereof, and a series oi truncated cones locatedwithin said innermost tube, the apexes of said truncated cones pointingtoward said inlet-orifice.

Referring to the drawings, Figure 1 is an end elevation of my improvedmuffier. Fig. 2 is a longitudinal section taken on line 2 2 of Fig.1,looking toward the left in said figure.

Fig. 3 is a transverse section taken on line 3 3 of Fig. 2, lookingtoward the left in said figure.

Like numerals refer to like parts throughout the several views of thedrawings.

In the drawings, 5, 6, and 7 are cylindrical tubes of difier'entdiameters, the outermost tube 7 being screw-threaded at each end thereofto receive the heads 8 9, each of said heads being provided with aflange 1011, re spectively screw-threaded interiorly to re- 9 arerespectively provided with annular flanges 12 13 and 14 15. The flangesY12 and 14 project into the opposite ends of the tube 6, and the flanges13 and 15 project into the opposite ends of the tube 5, said flangesholding the tubes 5 and. 6 concentric with each other and with theoutermost tube 7.

The head 8 is provided with an inlet-orifice 16 and has fastened theretbthe exhaust-pipe 17, said pipe 17 connecting with the exhaustpipe of anengine.- At the end of the innermost tube'5 opposite tothe=jinlet-oritice 16 are provided outlet-orifices 18 18, extendingthrough the periphery thereof, and at the right-hand end of the tube 6are provided orifices 19 19, extending through the periphery thereof. Inthe head 9 are provided outlet-orifices 20 20, said outlet-orificesopening out of the annular space adjacent to the outermost tube 7.

In the interior of the innermost tube 5 are provided truncated cones 21,the apexes of said truncated cones pointing toward the inlet-orifice 16,and said truncated cones 21 are preferably provided with orifices 22,extending through the peripheries thereof,said cones being rivetedtotheinnermost tube5by means of a flange 23, provided thereon.

The operation of the device is as follows: The exhaust gasolene vapor orsteam, as the case may he, enters the innermost tube 5 through the pipe17 and inlet-orifice 16 and first encounters the truncated cones 21.These decrease the velocity of the exhaust-vapor, and after said vaporhas passed said cones it has to travel the entire length of theinnermost tube 5, thence passing outwardly therefrom through theorifices 18 into the tube 6, thence passing toward the right, Fig. 2, tothe opposite end of said tube 6 from that at which it entered, passingoutwardly therefrom through the orifices 19into the tube 7, thencepassing toward the left, Fig. 2, into the annular space between the tube6 and the tube 7 and outwardly through the orifices 20 20, provided inthe heads 9. It will be seen that during thepassage of the exhaust-vaporthe velocity is constantly reduced, both by the distance which it has totravel, by the different obstacles in its path or the changing of thedirection in which the vapor is traveling,

and the increased area of the tubes to which it is alternately admitted,so that when the vapor finally passes out of the muffler through theorifices in the head 9 there is no perceptible sound caused thereby.

It is evident that the number of tubes may be increased according to thenecessities of the case.

My improved muffler is especially adapted to be used in connection withgaso1ene-engines and motor-vehicles on account of its extremesimplicity, practicability, and the small amount of space which it takesup.

Having thus described my invention, what I claim, and desire by LettersPatent to secure, is-- 1. In a ncise-mufller, a tube provided with aninlet-orifice at one end and an outlet-orifice at the other end thereof,and a series of truncated cones located within said tube, between saidorifices, the apexes of said truncated cones pointing toward saidinlet-0rifice.

2. In anoise-muffler, a tube provided with an inlet-orifice at one endand an outlet-orifice at the other end, and'a series of truncated coneslocated within said tube, between said orifices, the apexes of saidtruncated cones pointing toward said inlet-orifice, said truncated conesprovided with orifices in the periphery thereof.

3. In anoise-mufiier, a tube, a head at each end thereof, one of saidheads provided with an inlet-orifice opening into one end of said tube,the other end of said tube provided with an outlet-orifice in theperiphery thereof; and a series of truncated cones located within saidtube, between said orifices, the apexes of said truncated cones pointingtoward said inlet-orifice.

4:. In a noise-mufiier, a series of concentric tubes of differentdiameters, two heads to which the opposite ends of said tubes arerespectively fastened, one of said headsprovided with an inlet-orificeopening into one end of the innermost tube of said series of tubes, theother of said heads provided with outlet-orifices opening out of theannular space adjacent to the outermost tube of said series of tubes,the inner tubes of said series provided with orifices openingalternately from one into the other at opposite ends thereof, and aseries of truncated cones located within said innermost tube, theapexes'of said truncated cones pointing toward said inletorifice.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

; SAMUEL BOUTON.

Witnesses:

- CHARLES S. GOODING, ANNIE .l'. BAILEY.

